The 2014 Arctic Whale Ecology Study (ARCWEST)/Chukchi Acoustics, Oceanography, and Zooplankton Study-extension (CHAOZ-X) cruise took place on board the R/V Aquila. The cruise began in Nome, AK on 7 September 2014 and ended in Dutch Harbor, AK on 20 October 2014. Chief Scientist was Dr. Catherine Berchok, and the survey team consisted of 21 scientists representing nine different laboratories (for full personnel list, see Appendix 1). In summary, a total of 20 passive acoustic and 17 oceanographic moorings were retrieved, and 21 passive acoustic and 27 oceanographic moorings were redeployed. A total of 80 hydrographic and 61 zooplankton stations were conducted, 305 sonobuoys were deployed for 24 hour passive acoustic monitoring, over 1,500 nm surveyed for marine mammals and over 450 nm surveyed for seabirds.